Melting furnace



March so 1926.

1,579,077 w. H. CHENOWITH ET AL MELT I NG FURNAC E Original Filed Nov.8. 1924 Patented Mar. 30, 1926.

UNITED STATES: PATENro ElcE.

WILLIAM H. omnvowrrn AND ,GEOR E o. SCHIMPF, or BALTIMORE, MA Y AND, AS-

SIGNORS TO HARRY .D. HARVEY, or BALTIMORE, MARYLAND,

MELTING FURNACE.

Original application filed November 8, 1924, Serial No. 748,675. Dividedand 22, 1925. Serial No. 38,742.

To all'whom it may concern:

Be it known that we, WILLIAM H. CHENO- WITH and GEORGE G. SoHIMrF,citizens of the United States, residing at Baltimore, in the State ofMaryland, have invented .certain new and useful Improvements in MeltingFurnaces, of which the following is a specification. v

This invention relates to furnaces for melting type metals and the like.The present .application isa division of ouroriginal application, SerialNumber 748,675; filed November 8, 1924. The purpose of the pres-' entimprovements is to provide means where- V by the spout through which themolten metal is drawn from the meltingpot in the fur vnace may be swunginto various positions to deliver the metal into a plurality of molds,without permitting the escape of heat through the opening in the furnacewall through which the discharge spout extends.

In order to accomplish this, 'we swivel the discharge spout to themelting pot, at the outlet opening in the latter, and extend the spoutthrough-an elongated horizontal slot formed in the side wall of thefurnace, so that the free end of the spout may be swung to varioushorizontal positions for pouring, and we provide a horizontally slidablecover .for the slot, the parts being so arranged that in any position ofthe spout the slot in the furnace wall will be closed by the cover. Thecover is preferably composed of several sections, through the centralone of which the spout extends. By this arrangement, the

total length of the cover and its guideways 1, showing the spout in itscentral position; i

- y the slot. The central section is slightly may be made much shorterthan if the cover were in one piece.

In the accompanying drawing, Fig. 1 is a side elevation, partly insection, of the lower part of a furnace having our improvements thereon;r s Fig. 2 is a similar view, the section being taken onthe line of thespout; Fig. 3 is a section on the line 33 of Fig.

ranged. The bottom of the melting pot .is'

' in three vsections.

a sleeve 1, having a valve seatin its upper this application filed Juneend, and avalve 2 one vertically movable.

rod 3 isadapted to control the flowof metal through the opening in thesleeve. A spout 4 has an elbow 4 ,,one end of -which is swiveled aboutthe lower endof the valve sleevel, and the spoutextendsfromjthe'opposite end of. saidelbow through a slot 5, extendinghorizontally in the wall 6 of the furnace, and also through an opening7, in a sliding covering 0,.which closes said opening. This slidingcover is composed of a central section 8 and end sections 9 and 10, f

these sections being slidable in flanged guides; 11 and 12, arrangedabove and below Jthe slot and extending for a considerable disspout .41,with this arrangement, may be 'tance beyond the ends of the slot. The

swung to any position between the ends of the slot in order to deliverthe metal into a plurality of molds, and in any position of the spoutthe slot in the furnace casing will remain covered orclosed. The cover 0might be made in one piece of sufficient,

length to cover the slot. in anyposition of the spout; but this wouldrequire a very long one-piece cover which would be diiiicult to move,and which also might interfere with other parts around the furnace wall.Therefore, the cover ,for the slot is made Thecentral section 8 hasflanges 8 atits ends, and the sections 9 and 10 have flanges 9 and 10respectively, arranged between the flanges 8, so that when the centralsection is movedin one. direction, it'will pull the end section 9 afterit and will slide upon the section 10 without moving the latter, asillustrated in Fig. 4. When the spout is moved in theoppositei'dir'ecti-on,

the central section will pull the section 10 over theadjacent'end of theslot, and the spout 4" will engage the flanged end of the section 9' andmove the latter back to the position shown in Fig.3, where the flangedend of said section is in registry with the end of longer than the slotso that in the intermediateposition of the spout, shown in Fig. 3, i

said section will'close the slot, and when the' spout is moved in onedirection or the other;

from the center, one'of the end sections will move with the centralsection and thus the slot the casing will be closed at all times. i

It is :heliesved that the operation of the devices will be clear fromthe foregoing Without any further detailed statement of operation.-

What We (ilaimiifsz' v 1. A melting furnace comprising a verticallyextending casing having a cylindrical Wall and having aliorizontal slotin said wall, :a lio rizenltalily sliding cover lion-said slot, amelting pot in said casing, said pot having an outlet, substantially atthe axis e f the casing, and a spout swiveled to the pot at the outletand'extending through an opening in said sliding cov eT. I I

' 2. Ameltwng tunn ace'comprising a ertn ng casing having" a cyllnelilca l Wall and having a-l-ioi izon'ta l slot "in said walll, ahorizontally SIlClHlg cover for "said slot comprising a central section,havi -'an opening 'tlieizefilrrough, and two end sections,

7 said centred section having means at its 'ends for puikl ing one orthe other of the end sectimes over a part of the slat, according to thediveoti'on of movement of said central section, a melting pot in said'casing and having an ent-let substantially at the axis cit-the casing,and a spout sw'iveled at said outlet and extending tl n ontgh theopening in said =ee1-itral section.

7 3. A melting furnace comprising a vertically (ext-ending casing havinga cylindrical wall and having a horizontal slot in said Wall, ahorizontally sliding cover for said slot icon'npi'isin a centralsection, having an opening therethrough, and two end sections, saidcentred section having uneams at its ends for pulling one or the otherof the end sections over a part of the slot, according pot :at-theoutlet and extending-through :sai'd' slot. H

In testimony whereof We hereunto alfiz; our "S1 gnatures.

WTLLIAM CHENOWVITi-I.

GEORGE -.SCHLIMPF. v

